论文标题
具有观察性约束的幻影宇宙学模型$ f（q）$重力
Phantom cosmological model with observational constraints in $f(Q)$ gravity
论文作者
论文摘要
在本文中，宇宙的宇宙学模型已在$ f（q）$重力中提出，并且参数受到宇宙学数据集的约束。一开始，我们采用了$ f（q）=α+βq^{n} $的积极进取的形式，其中$α$，$β$和$ n $是模型参数。我们已经在红移中获得了哈勃参数，并从考虑的形式的$ f（q）$中进行了一些代数操纵。然后，我们使用$ \ textit {mcmc} $ Analysis进行参数化，使用最近的$ Hubble $数据和$ Pantheon + Shoes $ DATA参数。我们使用$ \ textit {bao} $数据集验证获得的模型参数值。合并参数的参数化显示了早期减速和迟到的加速度，其过渡为$ z_t \ oft0.75 $。 $ OM（Z）$诊断提供了正斜率，这表明该模型处于幻影阶段。同样，宇宙的当前年龄也已获得为$ t_ {0} = 13.85 ~~ gyrs $。基于目前的分析，它表明$ f（q）$重力可以为解决当前宇宙加速度的黑暗能量提供替代方案。
In this paper, the cosmological model of the Universe has been presented in $f(Q)$ gravity and the parameters are constrained from the cosmological data sets. At the beginning, we have employed a well motivated form of $f(Q) = α+ βQ^{n}$, where $α$, $β$ and $n$ are model parameters. We have obtained the Hubble parameter in redshift with some algebraic manipulation from the considered form of $f(Q)$. Then we parameterize with the recent $Hubble$ data and $Pantheon + SHOES$ data using $\textit{MCMC}$ analysis. We validate our obtained model parameter values with $\textit{BAO}$ data set. A parametrization of the cosmographic parameters shows the early deceleration and late time acceleration with the transition at $z_t\approx0.75$. The $Om(z)$ diagnostics gives positive slope which shows that the model in the phantom phase. Also the current age of Universe has been obtained as, $t_{0} = 13.85~~Gyrs$. Based on the present analysis, it indicates that the $f(Q)$ gravity may provide an alternative to dark energy for addressing the current cosmic acceleration.
